wannacry | 0064a5e1fb383f45293db229eacb793dce0e9a94a40778307b012f1c4c062b6b

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
12-07-2023 08:10

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General

Target

0064a5e1fb383f45293db229e.dll
Size

5.0MB
MD5

7f429a8e660c28fa4465412a37fa4a4e
SHA1

153b73e368b2e2355fa7999b053068cd8859b771
SHA256

0064a5e1fb383f45293db229eacb793dce0e9a94a40778307b012f1c4c062b6b
SHA512

2e622930fc3779f5ec5c9d9b6fda047d1a9e8781a39d25403f7a2e4b2e468badc0cd53f7624865fe6ce5bf2001030ac1e83c98b6fc8f3f251bcf7ad7648c00fd
SSDEEP

49152:RnNQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:1WqPoBhz1aRxcSUDk36SA

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3038) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046

Executes dropped EXE 2 IoCs

pid	Process
4808	mssecsvr.exe
4324	mssecsvr.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 2840	3068	rundll32.exe	86
PID 3068 wrote to memory of 2840	3068	rundll32.exe	86
PID 3068 wrote to memory of 2840	3068	rundll32.exe	86
PID 2840 wrote to memory of 4808	2840	rundll32.exe	87
PID 2840 wrote to memory of 4808	2840	rundll32.exe	87
PID 2840 wrote to memory of 4808	2840	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0064a5e1fb383f45293db229e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3068
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0064a5e1fb383f45293db229e.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2840
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4808

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4324

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvr.exe

Filesize
2.2MB

MD5
defbf75977b0d61f8b2ee2e8cb91e1b5

SHA1
1c70b5b82eb25eda963a1d027175f90c3092c060

SHA256
71f62cd566bcc16dd3170efc888da5cd12be3910894e64efa5dd10d5405fc893

SHA512
e9af6452549d29d68407f094c97d9ffa1ea6257fde3e952646478fd19f129f4f4445046eab15899a320b46a8713b3da08e37af0de08ae357c9ba2e57365b0bf2

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
defbf75977b0d61f8b2ee2e8cb91e1b5

SHA1
1c70b5b82eb25eda963a1d027175f90c3092c060

SHA256
71f62cd566bcc16dd3170efc888da5cd12be3910894e64efa5dd10d5405fc893

SHA512
e9af6452549d29d68407f094c97d9ffa1ea6257fde3e952646478fd19f129f4f4445046eab15899a320b46a8713b3da08e37af0de08ae357c9ba2e57365b0bf2

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
defbf75977b0d61f8b2ee2e8cb91e1b5

SHA1
1c70b5b82eb25eda963a1d027175f90c3092c060

SHA256
71f62cd566bcc16dd3170efc888da5cd12be3910894e64efa5dd10d5405fc893

SHA512
e9af6452549d29d68407f094c97d9ffa1ea6257fde3e952646478fd19f129f4f4445046eab15899a320b46a8713b3da08e37af0de08ae357c9ba2e57365b0bf2

Download Submit